Concentrations of Risk (Tables)

12 Months Ended

Dec. 31, 2012

Concentration Risk [Line Items]

Schedule of Major Customer Revenue Concentration

	2012	2011	2010
Customer:
AT&T	18%	24%	22%
DIRECTV®	17%	20%	20%

Ten Largest Customers [Member]

Concentration Risk [Line Items]

Schedule of Major Customer Revenue Concentration

Revenue concentration information for the Company's top ten customers, as a percent of total consolidated revenue from continuing operations, is as follows:

	2012	2011	2010
Revenue from top ten customers	64%	71%	72%